IEEE Antennas and Wireless Propagation Letters最新文献_第9页

Improved Measurement Method With Distance Correction of the Near-Field Radar Cross Section 改进的近场雷达截面距离校正测量方法

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3530975

Lin Qin;En Li;Chong Gao;Jinshi Liu;Haoyu Wen;Hui Zhu;Yong Gao;Yunpeng Zhang;Chengyong Yu;Jiawei Long

{"title":"Improved Measurement Method With Distance Correction of the Near-Field Radar Cross Section","authors":"Lin Qin;En Li;Chong Gao;Jinshi Liu;Haoyu Wen;Hui Zhu;Yong Gao;Yunpeng Zhang;Chengyong Yu;Jiawei Long","doi":"10.1109/LAWP.2025.3530975","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530975","url":null,"abstract":"Near-field radar cross section (RCS) measurement is an important method for determining the RCS of a target. For near-field RCS measurements, the distance between the target and the antenna is insufficient for far-field measurements. The far-field RCS of the target is derived from the near-field data based on a multiple scattering center model. Conventional algorithms make several approximate assumptions about the measurement distance, which results in the calculated far-field RCS being independent of the measurement distance, introducing unnecessary RCS measurement errors. We propose a near-field quasi-monostatic RCS measurement distance correction method. In addition, the components related to the measurement distance are separated and corrected in the near-field to far-field transformation (NF2FFT) algorithm. Finally, the method was used to calculate the RCS of a metal plate and a metal cylinder for the different distances in the simulation and practical measurement in X band. The final results show that the method reduces the average RCS error by 0.64 dB for a 500 mm × 100 mm × 4 mm metal plate at 2 m measurement distance in the X band, confirming the effectiveness of the proposed method.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1223-1227"},"PeriodicalIF":3.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Band Antenna With 2.4 GHz Omnidirectional and 5.8 GHz Pattern-Reconfigurable Radiation Modes 2.4 GHz全向和5.8 GHz模式可重构辐射模式双频天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-17 DOI: 10.1109/LAWP.2025.3531482

Sen Lin;Yunfei Cao;Fangjiong Chen;Quan Xue;Wenquan Che

引用次数: 0

Ultra-Short Horn Antennas via Digital Choke and Groove Aperture Topologies 基于数字扼流圈和沟槽孔径拓扑的超短喇叭天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-16 DOI: 10.1109/LAWP.2025.3530859

Galestan Mackertich-Sengerdy;Sawyer D. Campbell;Douglas H. Werner

引用次数: 0

Wideband Dual-Polarized Metasurface Antenna With Polarization Reconfigurable Controlled by Diode and Resistor, Featuring Low RCS 低RCS的二极管和电阻控制的偏振可重构宽带双极化超表面天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-16 DOI: 10.1109/LAWP.2025.3530170

Zhendong Ding;Jiawang Li;Jianyin Cao;Hao Wang;Michael Yan-Wah Chia;Nasimuddin Nasimuddin

{"title":"Wideband Dual-Polarized Metasurface Antenna With Polarization Reconfigurable Controlled by Diode and Resistor, Featuring Low RCS","authors":"Zhendong Ding;Jiawang Li;Jianyin Cao;Hao Wang;Michael Yan-Wah Chia;Nasimuddin Nasimuddin","doi":"10.1109/LAWP.2025.3530170","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530170","url":null,"abstract":"A polarization-reconfigurable metasurface wideband antenna with dual polarization and a low radar cross section (RCS) is presented. The antenna employs a diode positioned between two transmission lines to control the current direction and a resistor on a defected-ground branch to manage phase shifts, enabling seamless transitions between circular polarization and linear polarization. The elliptical metasurface design contributes to a reduced RCS. The design results are verified through measurement, showing an impedance bandwidth (IBW) of 49.1%, an axial ratio bandwidth (ARBW) of 23.2% for the diode is <sc>off, an IBW of 36.4% for the diode is <sc>on, the IBW of the connected resistor is 40.7%, and the peak gains for the three states are 6.4 dBi, 4.4 dBi, and 4.2 dBi, respectively. The metasurface achieves a low RCS bandwidth ranging from 2 GHz to 24 GHz, showing a 6 dBsm reduction in RCS from 4.9 GHz to 19.7 GHz, which corresponds to a 120.3% decrease compared to a perfect electric conductor (PEC) plate.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1208-1212"},"PeriodicalIF":3.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2024 Index IEEE Antennas and Wireless Propagation Letters Vol. 23 2024索引IEEE天线和无线传播通信Vol. 23

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529163

引用次数: 0

Scattering by Multiple Arbitrary Circular Cavities Loaded in a PEC Plane PEC平面上加载多个任意圆腔的散射

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529488

Mehdi Bozorgi

引用次数: 0

Wideband High-Gain Quad-Polarization Reconfigurable Antenna Using Three-Layered Polarizer 基于三层极化器的宽带高增益四极化可重构天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529684

Zhengrong Lu;Yujian Li;Junhong Wang

引用次数: 0

A Closed-Form Solution for Electromagnetic Wave Propagation in Spatially Unbounded, Linear Time-Varying Plasmas 电磁波在空间无界线性时变等离子体中传播的封闭解

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3528860

Hossein Mehrpour Bernety;Mark A. Cappelli

引用次数: 0

A Wideband Differential Dual Circularly Polarized Laminated Resonator Antenna 宽带差分双圆极化层压谐振器天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3529493

Yaowei Hou;Junming Ding;Yueping Zhang;Junfa Mao

{"title":"A Wideband Differential Dual Circularly Polarized Laminated Resonator Antenna","authors":"Yaowei Hou;Junming Ding;Yueping Zhang;Junfa Mao","doi":"10.1109/LAWP.2025.3529493","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529493","url":null,"abstract":"A wideband differential dual circularly polarized (CP) laminated resonator antenna (LRA) is reported in this letter for the first time. Two 90° hybrid couplers and four rotationally symmetrical L-probes are adopted as the feeding of the dual CP LRA. The four input ports of the 90° hybrid couplers form two pairs of differential ports for dual CP operations. When each pair of differential ports is supplied with differential signals, the proposed LRA works in its degenerate dominant modes, <inline-formula><tex-math>${rm TE}^{y}_{101}$</tex-math></inline-formula> and <inline-formula><tex-math>${rm TE}^{x}_{011}$</tex-math></inline-formula> modes, with a −90°/+90° phase difference, which radiates left-handed circular polarization (LHCP) or right-handed circular polarization (RHCP) waves, respectively. For demonstration, an antenna prototype is simulated, manufactured, and experimented. The differential dual CP LRA in a low profile of 0.119<italic>λ0 shows a broad measured effective bandwidth of 28.6% confined by the −10 dB differential impedance, 3 dB axial ratio (AR), and −15 dB LHCP-to-RHCP isolation bandwidths. Besides, the radiation patterns are stable and symmetric. The in-band gain varies within 1 dB. The proposed LRA is a promising candidate for applications in differential wireless communication systems of multiple circular polarization.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1183-1187"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

66–76 GHz High-Isolation 1-D Wide-Angle Scanning Phased Array Antenna With Bent-Wall Structures 弯曲壁结构66-76 GHz高隔离一维广角扫描相控阵天线

IF 3.7 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3529596

Jinghao Li;Wanchen Yang;Yuji Liu;Wenjie Feng;Quan Xue;Wenquan Che

引用次数: 0